21648055

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 32729184

約数和(自身を除く): 11081129

約数列:

[1, 5, 11, 13, 17, 55, 65, 85, 137, 143, 169, 187, 221, 685, 715, 845, 935, 1105, 1507, 1781, 1859, 2329, 2431, 2873, 7535, 8905, 9295, 11645, 12155, 14365, 19591, 23153, 25619, 30277, 31603, 97955, 115765, 128095, 151385, 158015, 254683, 333047, 393601, 1273415, 1665235, 1968005, 4329611, 21648055]

約数ペア:

[(1, 21648055), (5, 4329611), (11, 1968005), (13, 1665235), (17, 1273415), (55, 393601), (65, 333047), (85, 254683), (137, 158015), (143, 151385), (169, 128095), (187, 115765), (221, 97955), (685, 31603), (715, 30277), (845, 25619), (935, 23153), (1105, 19591), (1507, 14365), (1781, 12155), (1859, 11645), (2329, 9295), (2431, 8905), (2873, 7535)]